尼龙衬套注射模的设计

尼龙衬套注射模的设计

摘要

衬套是用途广泛的零件，零件简单，产量大。本次设计要求采用PA1010作为塑件材料，模具结构采用一模四腔，并设计冷却管道。本次注射模的设计过程包括以下几个部分：塑件的工艺性分析、塑件的体积和质量计算及注射机参数的确定；分型面选择、型腔数确定、型腔的排列方式、浇口设计、模架的确定、排气槽的设计、脱模推出机构方式确定、模具冷却系统设计、导向与定位机构的设计；型芯、型腔尺寸计算、模具冷却系统计算；模具闭合高度确定，注射机有关参数的校核。随着模具制造的商业化和标准化，以及计算机技术的成熟，人们将计算机运用到模具的设计、制造工程中，以提高生产效率，获得更高的经济效益，CAD、CAM、CAPP等技术在模具行业得到普遍运用，本次设计也采用CAD、Pro/E等软件进行辅助设计。最终设计完成的模具能够达到设计要求和生产需要。

关键词：尼龙衬套；注射模；一模四腔

THEDESIGNOFINJECTIONMOLDOFNYLONBUSHINGS

ABSTRACT

Bushisawidlyusedpartandissimpleandlargeoutput.ThisdesignrequiresPA1010asplasticmaterial,moldstructureusesafour-cavitymold,andhavetodesignthecoolingchannels.Theinjectionmolddesignprocessincludesthefollowingsections:Analysisoftheprocessofplasticparts,ThevolumeandmasscalculationofPlasticpartsandInjectiondeterminationofMachineparameter;Thechoiceofpartingline,determinationofthenumberofCavity,ThearrangementoftheCavity,Designofgate,Determinationofmoldbases,designofthevent,Determinationofdemoldingandejectionorganizations,Designofdiecoolingsystem,ThedesignGuidanceandpositioningorganizations;CoreandCavitysizecalculation,Diecoolingsystemcomputation,Determinationofmouldshutheihgt,Injectionmachineparametersintheverification.Aswellasthematurityofcomputertechnology,computerisappliedinmold’sdesignmanufacturetoincreasetheproductionefficiencyandobtainahighereconomicbenefit.So,sometechnologiessuchasCAD,CAM,CAPPandsoonareuniversallyutilizedininjectionmoldmarket,ThisdesignalsousesAtouCAD,Pro/Eandothersoftwaretoaiddesign.Thefinaldesignofthemoldachievethedesignrequirementsandproductionneeds.

Keywords:nylonbushings;injectionmold；afour-cavitymold

目录

1绪论.........................................................................................................................................1

1.1国内注塑模的发展现状..................................................................................................1

1.2发展趋势..........................................................................................................................22设计题目及设计要求............................................................................................................4

2.1设计题目.........................................................................................................................4

2.2设计要求..........................................................................................................................43模具设计................................................................................................................................5

3.1塑件成型工艺性分析.....................................................................................................5

3.1.1塑件的分析............................................................................................................5

3.1.2尼龙的性能分析....................................................................................................5

3.1.3尼龙的注射成型过程及工艺参数........................................................................6

3.2拟定模具的结构形式......................................................................................................6

3.2.1分型面的确定........................................................................................................6

3.2.2型腔数量和排列方式的确定................................................................................7

3.2.3注射剂型号的确定................................................................................................8

3.3浇注系统的设计............................................................................................................10

3.3.1主流道的设计......................................................................................................10

3.3.2分流道的设计......................................................................................................11

3.3.3浇口的设计..........................................................................................................13

3.3.4校核主流道的剪切速率......................................................................................14

3.3.5冷料穴的设计及计算..........................................................................................15

3.4成型零件的结构及计算................................................................................................15

3.4.1成型零件的结构设计..........................................................................................15

3.4.2成型零件钢材的选用..........................................................................................16

3.4.3成型零件的工作尺寸计算..................................................................................18

3.5模架的确定....................................................................................................................20

3.5.1模架的选择..........................................................................................................20

3.5.2模板尺寸的确定..................................................................................................20

3.5.3模架各尺寸的校核..............................................................................................20

3.6排气槽的设计................................................................................................................21

3.7脱模推出机构的设计......................................................................................... …… 此处隐藏：12185字，全部文档内容请下载后查看。喜欢就下载吧 ……